It is kind of impressive this game has gone 10 years and been as big as it is and there has never been a single crossover outside of Type Moon ever. I wonder how much money they've theoretically left on the table because of that.
I actually appreciate it, it makes everyone and everything feel truly permanent - because they're Type Moon IPs they can and are continuously relevant - Chloe and Shiki in Summer events etc. but I wonder what the Lostbelt where FGO had non-TM collab events would be like